Hello, I intend to buy an Titanium Energi Plug In. I live on Montreal. You know that winter is cold here... I commute to work for 18 km (one way), so I intend to use the car most on electric charge. I want to install an engine heater but asking if it will be really useful for my commutes. I understand that during winters it will always start the gas engine from the start, so I think that the heater will be useful, at least when I will go to work in the morning, because on work I will have to keep it outside... After 9 hours at -15 F it will be a hard start... I hope that the efficiency of the batteries will not be affected permanently by the cold weather, so, even during the winter the efficiency (autonomy on EV) will decrease, hope to get it back on the summer, almost 100%